CN103481492A - Drying-free plastic extruder enabling filter screen to be replaced without stopping extruder - Google Patents

Drying-free plastic extruder enabling filter screen to be replaced without stopping extruder Download PDF

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Publication number
CN103481492A
CN103481492A CN201210208488.8A CN201210208488A CN103481492A CN 103481492 A CN103481492 A CN 103481492A CN 201210208488 A CN201210208488 A CN 201210208488A CN 103481492 A CN103481492 A CN 103481492A
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CN
China
Prior art keywords
melt
chamber
feed hopper
filter screen
air release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201210208488.8A
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Chinese (zh)
Inventor
黄美昌
陈崇锡
周传对
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Individual
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Individual
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Priority to CN201210208488.8A priority Critical patent/CN103481492A/en
Publication of CN103481492A publication Critical patent/CN103481492A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/69—Filters or screens for the moulding material
    • B29C48/691—Arrangements for replacing filters, e.g. with two parallel filters for alternate use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/64—Screws with two or more threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/826—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/2725—Cleaning; Purging; Avoiding contamination of filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/286—Raw material dosing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/55—Screws having reverse-feeding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/575—Screws provided with elements of a generally circular cross-section for shearing the melt, i.e. shear-ring elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a drying-free plastic extruder enabling a filter screen to be replaced without stopping an extruder. The drying-free plastic extruder enabling the filter screen to be replaced without stopping the extruder comprises a charging barrel, a screw, a feed hopper and a die head. The drying-free plastic extruder enabling the filter screen to be replaced without stopping the extruder is characterized in that a feed delivery heating cavity, a plastic compression fusion cavity, a gas release cavity, a melt delivery extrusion cavity, a melt flow choking cavity, a melt feed delivery cavity, a melt compression delivery cavity and an extrusion measure cavity are respectively arranged on the charging barrel. A feed hopper is arranged on the feed delivery heating cavity. A gas discharging opening is formed in the gas release cavity. A melt discharge opening is formed in the melt delivery extrusion cavity. A melt feed hopper is arranged on the melt feed delivery cavity. A melt filter is installed between the melt discharge opening and the melt feed hopper. The drying-free plastic extruder enabling the filter screen to be replaced without stopping the extruder has the advantages that the filter screen can be changed under the condition that a main machine is not stopped, the plastic extruder is suitable for fusion extrusion of different kinds of water-containing plastic such as a polyethylene terephthalate (PET) spring water bottle smash material, waste is reduced, working efficiency is greatly improved, working intensity of a worker is reduced and power consumption is saved.

Description

Exempting from drying does not shut down and changes the filter screen plastic extruder
Technical field
The present invention relates to the plastics machinery field, especially exempt from drying and do not shut down and change the filter screen plastic extruder.
Technical background
Manufacture both at home and abroad at present, sell, the plastic extruder used, the plastic flat fiber that it is the most frequently used, plastic round wire, plastic membrane blowing, the plastic extruder that the productions such as plastic extrusion calendering are used, screw-rod structure is typical single screw rod three-stage structure, it is feed zone, compress melt zone and extrude metering section, corresponding barrel is divided into feed cavity, plastics compression melt chamber and measurement chamber, said structure is only applicable to new plastic raw materials production, the numerous waste plastic in countries in the world is recycled at present needs by cleaning, dry, granulation, could use the prior art plastic extruder, also to often shut down the replacing screen pack, energy consumption is large, take the labour, utilization rate is low, particularly to the tetchy PET plastics of moisture content, its discarded PET mineral water bottle crushed material can't be used the prior art plastic extruder to be recycled.
Summary of the invention
After the objective of the invention is to reclaim pulverizing for waste plastic, moisture is high, impurity is many, can't use the direct extrusion of prior art plastic extruder, particularly to the extremely sensitive PET material of moisture, it is high because of moisture after its discarded PET mineral water bottle reclaims and pulverizes, more can't utilize the prior art plastic extruder, now provide and exempt from drying and do not shut down and change the filter screen plastic extruder, include the barrel of hollow, in barrel, be equipped with respect to the rotatable screw rod of barrel, one end and the drive unit of screw rod link, be respectively equipped with feed hopper on barrel and for the die head of moulding discharging, it is characterized in that: be respectively equipped with charging on barrel and carry heating chamber, plastics compression melt chamber, the air release chamber, melt Conveying extrudes chamber, melt choked flow chamber, melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber, wherein melt heats conveyor chamber in charging, plastics compression melt chamber, air release chamber and melt Conveying extrude chamber and communicate, melt is at melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber and communicates, be provided with feed hopper on charging heating conveyor chamber, be provided with one or more exhaust outlets on the air release chamber, extrude on chamber and be provided with the melt discharging opening in melt Conveying, be provided with the melt feed hopper on melt charging conveyor chamber, between melt discharging opening and melt feed hopper, fondant filter is installed.
As preferably, be respectively equipped with charging heating conveyor chamber on barrel, the first air release chamber, plastics compression melt chamber, the second air release chamber, melt Conveying extrudes chamber, melt choked flow chamber, melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber, wherein melt heats conveyor chamber in charging, the first air release chamber, plastics compression melt chamber, the second air release chamber and melt Conveying extrude chamber and communicate, melt is at melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber and communicates, be provided with feed hopper on charging heating conveyor chamber, be respectively equipped with one or more exhaust outlets on the first air release chamber and the second air release chamber, extrude on chamber and be provided with the melt discharging opening in melt Conveying, be provided with the melt feed hopper on melt charging conveyor chamber, between melt discharging opening and melt feed hopper, fondant filter is installed.
As preferably, described screw rod is single screw rod, at the corresponding screw rod position of plastics compression melt chamber, is provided with the divergence type helicitic texture, at the corresponding screw rod position in melt choked flow chamber, is provided with the left-hand thread structure.
As preferably, described screw rod is twin-screw, at the corresponding screw rod position in melt choked flow chamber, is provided with the left-hand thread structure.
As preferably, described feed hopper and melt feed hopper are equipped with melt material level automatic detection device on the melt feed hopper, and reinforced self-checking device is installed on feed hopper.
As preferably, it is characterized in that: on an exhaust outlet on described air release chamber, the melt feed hopper is installed.
As preferably, on an exhaust outlet on described the second air release chamber, the melt feed hopper is installed.
Beneficial effect of the present invention: because barrel is provided with air release chamber or the first air release chamber, the second air release chamber, and be provided with one or more exhaust outlets thereon, can exclude in time the moisture that raw material is brought into, extrude on chamber and be provided with the melt discharging opening in melt Conveying, be provided with the melt feed hopper on the melt feed cavity, therefore can between melt discharging opening and melt feed hopper, fondant filter be installed, can filter the impurity that raw material is brought into, and can in the non-stop-machine situation of main frame, change filter screen, thereby can adapt to melt extruding of various plastic raw materials, cut the waste, greatly increase work efficiency, improve workman's labour intensity, save power consumption, can also recycle the tetchy PET mineral water bottle crushed material gone out of use of moisture content is made to raw material, turn waste into wealth.
The accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of another embodiment of the present invention.
Fig. 3 is the structural representation of another embodiment of the present invention.
The specific embodiment
Further describe embodiment below in conjunction with accompanying drawing
With reference to Fig. 1: Fig. 1, be the structural representation of one embodiment of the invention, 1-charging heating chamber, 2-plastics compression melt chamber, 3-air release chamber, 4-melt Conveying extrusion chamber, 5-melt choked flow chamber, 6-melt feed cavity, 7-melt compression conveyor chamber, 8-extrude measurement chamber, 9-feed hopper, the reinforced self-checking device of 10-, 11-divergence type screw thread, 12-exhaust outlet, the outlet of 13-melt, 14-fondant filter, the standby strainer body of 15-, 16-left-hand thread, 17-melt feed hopper, 18-material level automatic detection device, 19-barrel, 20-screw rod.As can be seen from FIG., melt choked flow chamber 5 is divided into two large chambers by barrel, front chamber includes charging heating chamber 1, plastics compression melt chamber 2, air release chamber 3, melt Conveying extrudes chamber 4, between chamber and chamber, melt communicates, rear chamber includes melt feed cavity 6, melt compresses conveyor chamber 7 and extrudes measurement chamber 8, between chamber and chamber, melt communicates, be provided with feed hopper 9 on charging heating chamber 1, screw portion structure in plastics compression melt chamber 2 is divergence type helicitic texture 11, be provided with exhaust outlet 12 on air release chamber 3, extrude on chamber 4 and be provided with melt discharging opening 13 in melt Conveying, be provided with melt feed hopper 17 on melt feed cavity 6, between melt discharging opening 13 and melt feed hopper 17, fondant filter 14 is installed, the corresponding screw portion in melt choked flow chamber 5 is designed with left-hand thread 16, the feed hopper 9 that the melt feed hopper 17 of the present embodiment is provided with material level automatic detection device 18 and the present embodiment is provided with reinforced self-checking device 10, during work, solid material enters the charging heating chamber 1 in barrel 19 by reinforced self-checking device 10 from feed hopper 9, the outer thermal source that is provided with of barrel 19 heats, screw rod 20 is driven in the interior rotation of barrel 19 by drive unit, solid material is pushed forward and is heated by screw rod 20 and enters plastics compressions melt chamber 2 in charging heating chamber 1, raw material is heated and melting enters in air release chamber 3 at the interior pressurized of plastics compressions melt chamber 2, the residual gas of being brought into by raw material and moisture are discharged from the exhaust outlet 12 of this chamber, plastic melt continues to be advanced by the screw rod 20 of rotation, the melt discharging opening 13 extruded chamber 4 from melt Conveying enters fondant filter 14, melt enters melt feed cavity 6 from melt feed hopper 17 after removing after filtration impurity, carry through melt compression conveyor chamber 7 and extrude measurement chamber 8 by screw rod 20 and enter die head or enter the die head moulding through three-way filtering again, material level height on melt feed hopper 17 is automatically detected by material level automatic detection device 18 and regulates charging with steady extruding by reinforced self-checking device 10, while changing screen pack, main frame is not shut down, only need on standby strainer body 15, install filter screen, the strainer body that drives the strainer body drive unit that standby strainer body displacement is being worked, loop, owing on an exhaust outlet 12 on the air release chamber, the melt feed hopper being installed, plastic melt comparatively clean on filter screen can be recovered to this melt feed hopper when changing screen pack in, can effectively economize in raw materials.
Embodiments of the invention beneficial effect: can make recycled plastics polymers that the high impurity of moisture is many directly enter originally to exempt from drying not shut down and change direct extrusion molding in the filter screen plastic extruder, simplify production process, save the labour, save the energy.
It with reference to Fig. 2: Fig. 2, is the structural representation of another embodiment of the present invention, 21-charging heating chamber, 22-the first air release chamber, 23-plastics compression melt chamber, 24-the second air release chamber, the 25-melt Conveying extrudes chamber, 26-melt choked flow chamber, 27-melt feed cavity, 28-melt compression conveyor chamber, 29-extrudes measurement chamber, the 30-feed hopper, the 31-self-checking device that feeds in raw material, 32-first row gas port 33-divergence type screw thread, 34-second row gas port, melt feed hopper before the 35-filter, the outlet of 36-melt, the 37-fondant filter, the standby strainer body of 38-, the 39-left-hand thread, 40-melt feed hopper, 41-material level automatic detection device, the 42-barrel, the 43-screw rod, as can be seen from FIG., melt choked flow chamber 26 is divided into two large chambers by barrel, front chamber includes charging heating chamber 21, the first air release chamber 22, plastics compression melt chamber 23, the second air release chamber 24, melt Conveying extrudes chamber 25, between chamber and chamber, melt communicates, rear chamber includes melt feed cavity 27, melt compresses conveyor chamber 28 and extrudes measurement chamber 29, between chamber and chamber, melt communicates, be provided with feed hopper 30 on charging heating chamber 21, be provided with first row gas port 32 on the first air release chamber 22, screw portion structure in plastics compression melt chamber 23 is divergence type helicitic texture 33, be provided with second row gas port 34 on the second air release chamber 24, extrude on chamber 25 and be provided with melt discharging opening 36 in melt Conveying, be provided with melt feed hopper 40 on melt feed cavity 27, between melt discharging opening 36 and melt feed hopper 40, fondant filter 37 is installed, the corresponding screw portion in melt choked flow chamber 26 is designed with left-hand thread 39, the feed hopper 30 that the melt feed hopper 40 of the present embodiment is provided with material level automatic detection device 41 and the present embodiment is provided with reinforced self-checking device 31, during work, solid material enters the charging heating chamber 21 in barrel 42 by reinforced self-checking device 31 from feed hopper 30, the outer thermal source that is provided with of barrel 42 heats, screw rod 43 is driven in the interior rotation of barrel 42 by drive unit, solid material is pushed forward by screw rod 43 in charging heating chamber 21 and pressurized is heated enters the first air release chamber 22, the moisture of being brought into by raw material is heated and turns to exhaust outlet 32 discharges of steam from this chamber, when using PET mineral water bottle crushed material to make raw material, this chamber can be established a plurality of exhaust outlets and be connected with vavuum pump, to remove to greatest extent moisture and the gas in PET mineral water bottle crushed material, plastic melt continues to enter plastics compression melt chamber 23 by the screw rod 43 of rotation, raw material is heated and melting enters in the second air release chamber 23 at the interior pressurized of plastics compressions melt chamber 23, remaining gas and moisture are discharged from the exhaust outlet 34 of this chamber, plastic melt continues to be advanced by the screw rod 43 of rotation, the melt discharging opening 36 extruded chamber 25 from melt Conveying enters fondant filter 37, melt enters melt feed cavity 27 from melt feed hopper 40 after removing after filtration impurity, carry through melt compression conveyor chamber 28 and extrude measurement chamber 28 by screw rod 43 and enter die head or enter the die head moulding through three-way filtering again, material level height on melt feed hopper 40 is automatically detected by material level automatic detection device 41 and regulates charging with steady extruding by reinforced self-checking device 31, while changing screen pack, main frame is not shut down, only need on standby strainer body 38, install filter screen, the strainer body that drives the strainer body drive unit that standby strainer body displacement is being worked, loop, due on an exhaust outlet 34 on the second air release chamber, be equipped with the filter before melt feed hopper 35, plastic melt comparatively clean on filter screen can be recovered to this melt feed hopper 35 when changing screen pack in, can effectively economize in raw materials.
It with reference to Fig. 3: Fig. 3, is the structural representation of another embodiment of the present invention, 51-charging heating chamber, 52-the first air release chamber, 53-plastics compression melt chamber, 54-the second air release chamber, the 55-melt Conveying extrudes chamber, 56-melt choked flow chamber, 57-melt feed cavity, 58-melt compression conveyor chamber, 59-extrudes measurement chamber, the 60-feed hopper, 61-first row gas port, 62-second row gas port, melt feed hopper before the 63-filter, the outlet of 64-melt, the 65-left-hand thread, the standby strainer body of 66-, the 67-fondant filter, 68-melt feed hopper, 69-material level automatic detection device, the 70-barrel, 71-screw rod A, 72-screw rod B, the 73-self-checking device that feeds in raw material.As can be seen from FIG., melt choked flow chamber 56 is divided into two large chambers by barrel, front chamber includes charging heating chamber 51, the first air release chamber 52, plastics compression melt chamber 53, the second air release chamber 54, melt Conveying extrudes chamber 55, between chamber and chamber, melt communicates, rear chamber includes melt feed cavity 57, melt compresses conveyor chamber 58 and extrudes measurement chamber 59, between chamber and chamber, melt communicates, be provided with feed hopper 60 on charging heating chamber 51, be provided with first row gas port 61 on the first air release chamber 52, be provided with second row gas port 62 on the second air release chamber 54, extrude on chamber 55 and be provided with melt discharging opening 64 in melt Conveying, be provided with melt feed hopper 68 on melt feed cavity 57, between melt discharging opening 64 and melt feed hopper 68, fondant filter 67 is installed, the corresponding screw portion in melt choked flow chamber 56 is designed with left-hand thread 65, the feed hopper 60 that the melt feed hopper 68 of the present embodiment is provided with material level automatic detection device 69 and the present embodiment is provided with reinforced self-checking device 73, two screw rods side by side are installed in the barrel of the embodiment of the present invention or claim twin-screw, during work, solid material enters the charging heating chamber 51 in barrel 70 by reinforced self-checking device 73 from feed hopper 60, the outer thermal source that is provided with of barrel 70 heats, screw rod A71 and screw rod B72 are driven in the interior rotation of barrel 70 by drive unit, solid material is pushed forward by screw rod A71 and screw rod B72 in charging heating chamber 51 and pressurized is heated enters the first air release chamber 52, the moisture of being brought into by raw material is heated and turns to exhaust outlet 61 discharges of steam from this chamber, when using PET mineral water bottle crushed material to make raw material, this chamber can be established a plurality of exhaust outlets and be connected with vavuum pump, to remove to greatest extent moisture and the gas in PET mineral water bottle crushed material, plastic melt continues to enter plastics compression melt chamber 53 by the screw rod A71 of rotation and screw rod B72, raw material is heated and melting enters in the second air release chamber 53 at the interior pressurized of plastics compressions melt chamber 53, remaining gas and moisture are discharged from the exhaust outlet 62 of this chamber, plastic melt continues to be advanced by the screw rod A71 of rotation and screw rod B72, the melt discharging opening 64 extruded chamber 55 from melt Conveying enters fondant filter 67, melt enters melt feed cavity 57 from melt feed hopper 68 after removing after filtration impurity, carry through melt compression conveyor chamber 58 and extrude measurement chamber 59 by screw rod A71 and screw rod B72 and enter die head or enter the die head moulding through three-way filtering again, material level height on melt feed hopper 68 is automatically detected by material level automatic detection device 69 and regulates charging with steady extruding by reinforced self-checking device 73, while changing screen pack, main frame is not shut down, only need on standby strainer body 66, install filter screen, the strainer body that drives the strainer body drive unit that standby strainer body displacement is being worked, loop, owing on an exhaust outlet 62 on the second air release chamber, melt feed hopper 63 being installed, plastic melt comparatively clean on filter screen can be recovered to this melt feed hopper 63 when changing screen pack in, can effectively economize in raw materials.
The present embodiment and the first two embodiment difference are two screw rods side by side are installed in barrel or claim twin-screw, can make the plastics melting mixing more abundant, can improve the quality of product.
Beneficial effect of the present invention: can make recycled plastics polymers that moisture is higher directly enter originally to exempt from drying not shut down and change direct extrusion molding in the filter screen plastic extruder; particularly to the extremely sensitive PET material of moisture; its discarded PET mineral water bottle can directly enter the present embodiment and exempt from drying and do not shut down and change direct extrusion molding in the filter screen plastic extruder after reclaiming and pulverizing; turn waste into wealth; also simplify production process; save the labour, save the energy.

Claims (7)

1. exempt from drying and do not shut down and change the filter screen plastic extruder, include the barrel of hollow, in barrel, be equipped with respect to the rotatable screw rod of barrel, an end and the drive unit of screw rod link, and are respectively equipped with feed hopper on barrel and, for the die head of moulding discharging, it is characterized in that: being respectively equipped with charging on barrel and carrying heating chamber, plastics compression melt chamber, the air release chamber, melt Conveying extrudes chamber, melt choked flow chamber, melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber, and wherein melt heats conveyor chamber in charging, plastics compression melt chamber, air release chamber and melt Conveying extrude chamber and communicate, and melt is at melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber and communicates, and on charging heating conveyor chamber, is provided with feed hopper, is provided with one or more exhaust outlets on the air release chamber, extrude on chamber and be provided with the melt discharging opening in melt Conveying, on melt charging conveyor chamber, be provided with the melt feed hopper, between melt discharging opening and melt feed hopper, fondant filter is installed.
2. exempting from according to claim 1 drying does not shut down and changes the filter screen plastic extruder, it is characterized in that: be respectively equipped with charging heating conveyor chamber on barrel, the first air release chamber, plastics compression melt chamber, the second air release chamber, melt Conveying extrudes chamber, melt choked flow chamber, melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber, wherein melt heats conveyor chamber in charging, the first air release chamber, plastics compression melt chamber, the second air release chamber and melt Conveying extrude chamber and communicate, melt is at melt charging conveyor chamber, melt compresses conveyor chamber and extrudes measurement chamber and communicates, be provided with feed hopper on charging heating conveyor chamber, be respectively equipped with one or more exhaust outlets on the first air release chamber and the second air release chamber, extrude on chamber and be provided with the melt discharging opening in melt Conveying, be provided with the melt feed hopper on melt charging conveyor chamber, between melt discharging opening and melt feed hopper, fondant filter is installed.
3. do not shut down and change the filter screen plastic extruder according to claim 1 and the described drying of exempting from of claim 2; it is characterized in that: described screw rod is single screw rod; corresponding screw rod position in plastics compression melt chamber is provided with the divergence type helicitic texture, at the corresponding screw rod position in melt choked flow chamber, is provided with the left-hand thread structure.
4. do not shut down and change the filter screen plastic extruder according to claim 1 and the described drying of exempting from of claim 2, it is characterized in that: described screw rod is twin-screw, at the corresponding screw rod position in melt choked flow chamber, is provided with the left-hand thread structure.
5. do not shut down and change the filter screen plastic extruder according to claim 1 and the described drying of exempting from of claim 2; it is characterized in that: described feed hopper and melt feed hopper; melt material level automatic detection device is installed on the melt feed hopper, reinforced self-checking device is installed on feed hopper.
6. exempt from according to claim 1 drying and do not shut down and change the filter screen plastic extruder, it is characterized in that: on an exhaust outlet on described air release chamber, the melt feed hopper is installed.
7. exempt from according to claim 2 drying and do not shut down and change the filter screen plastic extruder, it is characterized in that: on an exhaust outlet on described the second air release chamber, the melt feed hopper is installed.
CN201210208488.8A 2012-06-12 2012-06-12 Drying-free plastic extruder enabling filter screen to be replaced without stopping extruder Pending CN103481492A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104480549A (en) * 2014-12-19 2015-04-01 无锡兰华纺织机械有限公司 Pitch carbon fiber precursor spinning device
CN104647726A (en) * 2015-03-04 2015-05-27 张莫廷 Accessory for efficiently producing plastic product in energy-saving manner
WO2017208193A1 (en) * 2016-06-03 2017-12-07 Nexxus Channel S.R.L. Screw for polymeric material extruder and polymeric material extruder comprising said screw
CN107901376A (en) * 2017-11-17 2018-04-13 扬州利贞复合材料有限公司 A kind of blanking device of Modified plastic extruder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104480549A (en) * 2014-12-19 2015-04-01 无锡兰华纺织机械有限公司 Pitch carbon fiber precursor spinning device
CN104647726A (en) * 2015-03-04 2015-05-27 张莫廷 Accessory for efficiently producing plastic product in energy-saving manner
WO2017208193A1 (en) * 2016-06-03 2017-12-07 Nexxus Channel S.R.L. Screw for polymeric material extruder and polymeric material extruder comprising said screw
CN107901376A (en) * 2017-11-17 2018-04-13 扬州利贞复合材料有限公司 A kind of blanking device of Modified plastic extruder

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Application publication date: 20140101